Two-color laser modulation of magnetic Feshbach resonances

Li, Jian; Liu, Yong; Huang, Yin; Cong, Shu‐Lin

doi:10.1088/1674-1056/24/8/080308

Cited by 1 publication

(1 citation statement)

References 24 publications

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“…For instance, (ac) Stark decelerating [6][7][8] and Zeeman slowing [9] have been developed to the slow molecular beam to be a few meters per second with ∼mK temperature, while velocity filtering [10] and buffer gas cooling [11] have produced cold samples at tens of meters per second with ∼K temperature. Photo dissociation [12,13] and Feshbach resonance techniques [14,15] have also been successfully used to prepare ultra-cold molecular samples, but their lifetime is general short due to intermolecular collisions. Recently, the opto-electrical coolings of polyatomic molecules CH 3 F and H 2 CO, as a new technical route to sub-mK temperatures, have been reported excitingly.…”

Section: Introductionmentioning

confidence: 99%

BaF radical: A promising candidate for laser cooling and magneto-optical trapping

Wei

Xia

et al. 2017

Chinese Phys. B

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Recently, there have been great interest and advancement in the field of laser cooling and magneto-optical trapping of molecules. The rich internal structure of molecules naturally lends themselves to extensive and exciting applications. In this paper, the radical 138 Ba 19 F, as a promising candidate for laser cooling and magneto-optical trapping, is discussed in detail. The highly diagonal Franck-Condon factors between the X 2 Σ + 1/2 and A 2 Π 1/2 states are first confirmed with three different methods. Afterwards, with the effective Hamiltonian approach and irreducible tensor theory, the hyperfine structure of the X 2 Σ + 1/2 state is calculated accurately. A scheme for laser cooling is given clearly. Besides, the Zeeman effects of the upper (A 2 Π 1/2 ) and lower (X 2 Σ + 1/2 ) levels are also studied, and their respective g factors are obtained under a weak magnetic field. Its large g factor of the upper state A 2 Π 1/2 is advantageous for magneto-optical trapping. Finally, by studying Stark effect of BaF in the X 2 Σ + 1/2 , we investigate the dependence of the internal effective electric field on the applied electric field. It is suggested that such a laser-cooled BaF is also a promising candidate for precision measurement of electron electric dipole moment.

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